Does anyone know how to change the mouse cursor inside application dialogs (someplayer/symfonie/waze/etc...)

after inspecting the file /usr/bin/showmouse script i modified the xsetroot.azerty1 command to use another cursor which worked for hildon desktop and few other applications, but when the window of other applications that i use is focused, the cursor changes back to some default one (until i go back to hildon desktop).

Does any know how to change the mouse cursor shown for ALL windows?